Aquarium

Each piece is consisted of two cubes, which has some fish on its faces.

The problems are to make an aquarium with no imcomplete fish.

Main challenge is to arrange the four pieces to make a cube 2x2x2 with one fish on each face.

Extra challenge is to make some shape below (on the right side) without the condition of one fish on each face.

In 2022, the pieces were made of two kinds of material, so each color of the cubes (also the guide) are diffrent.

We have made this puzzle since 2006 (see below).